Snap fastener



XR dwe J'lb' 10, 1945. w. H. FITZGERALD, .1R 2,379,896

, SNAP FASTENER j j Filed Nov. 24, 194:5 2 sheets-sheet 1 V (J 2 /f /2 7lunu tor July 10, 1945- w. H. FITZGERALD: JR 2,379,896

SNAP FASTENER Filed Nov. 24, 1943 2 Sheets-Sheet 2 Inventor B,@maa/zlib'.

WWW M@ Patented July 10, 1945 UNITED STATES PATENT OFFICE SNAP FASTENERWalter H. Fitzgerald, Jr., Dallas, Tex.

Application November 24, 1943, Serial No. 511,587

1 Claim.

This invention relates to new and useful improvements in snap fasteners,the principal object being to provide a snap fastener which will hold ina more positive manner than snap fasteners of present-day construction.

Another important obj ect of the invention is to provide a snapfastener, the component parts of which can be readily connected togetherand also just as readily disconnected without the likelihood that thedisconnection can take place accidentally.

Other objects and advantages of the invention will become apparent tothe reader of the following description.

In the drawings:

Figure 1 represents a fragmentary top plan view showing a pair ofcomplementary sheets connected together by the improved snap fastener.

Figure 2 is a fragmentary detailed sectional view taken substantially onthe line 2-2 of Figure 1.

Figure 3 ls a longitudinal sectional view through the receiving unit ofthe fastener.

Figure 4 is a cross sectional view taken on the line 4-4 of Figure 1.

Figure 5 is a side elevational view of the fastener about to be engaged.

Figure 6 is a perspective view of the spring leaf.

Referring to the drawings wherein like numerals designate like parts, itcan be seen that the fastener consists of a receiving unit 5 and aninserted unit 6. The receiving unit 5 consists of a plate I having anupwardly and inwardly bent end portion describing a neck 8 and aninwardly disposed lip 9. The other end of the plate 5 is flangedupwardly as at II) and inwardly as at II to engage over and clampagainst the reduced tail portion I2 of a spring leaf I3 which has itsfree end slightly curved upwardly as at I4 to bear against the top sideof the lip 9 (see Figures 5 and 3). The tail portion I2 of the springleaf I3 and the adjacent end of the plate 1 are formed with registeringopenings I5 in order that the unit 5 may be 4sewed as at I6 to fabricII.

The inserted unit 6 consists of a plate I8 having a hookdiead I9 at oneend. This head I8 is a substantially 180 roll and is adapted to behooked over the neck portion 8 and lip,9 and rotated counterclockwise asviewed in Figure 5 to cause the hook I9 to ride into the unit 5 and toengage the lip 9, whereupon the spring leaf I3 will bear down on thisend of the plate I8 and prevent displacement of the same from the unit5.

The plate I8 has an opening 20 to permit sewing as at 2| of the unit 5to a piece of fabric 22.

While the foregoing specification sets forth the invention in specificterms, it is to be understood that numerous changes in the shape, sizeand materials may be resorted to without departing from the spirit andscope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:

A snap fastener comprising a receiving unit, an inserted unit, saidunits having complementary inter-connectible hook portions,and aspringon the receiving unit for engaging the hook on the inserted unit toprevent disconnection of said hook, said receiving unit being providedwith clamp means for holding the spring in positive

